Covered Assets And Indemnification Asset (Summary Of Activity In Covered Other Real Estate Owned) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Covered Assets And Indemnification Asset [Abstract]
Balance, beginning of period	$ 19,491	$ 29,863
Additions to covered OREO	6,987	15,271
Dispositions of covered OREO	(11,458)	(16,934)
Valuation adjustments in the period	(4,646)	(8,709)
Balance, end of period	$ 10,374	$ 19,491